currently got a einhel multitool. using it friday night it made some awfull rattling noise. anyway i had to get the job done (leak coming thru celling and needed to use it to make one cut to lift chipboard flooring) . carried on using it untill some bits started flying out its side , i would describe these as some black plastic shavings along with some smoke! . anybody know whats happend to it?? is it a bin job??? havent tryed it back on just in case!!